Barrier effect in dielectrics

Author

Lebedev, S.M. ; Gefle, O.S. ; Agoris, D.P. ; Pokholkov, Yu.P.

Author_Institution

Tomsk Polytech. Univ., Russia

Volume

2

fYear

2000

fDate

2000

Firstpage

895

Abstract

This paper presents results of the barrier effect study in gaseous and solid dielectrics in divergent and quasi-uniform electric fields. The influence of various factors such as the position of the barrier in gap, the permittivity and the conductivity change both on the breakdown voltage (V_b) and breakdown time (τ_b) in the uniform field and on the tree-initiation time (τ_i) in the divergent field was investigated. Application of barriers with high permittivity may result in a significant increase in τ_b. An analysis of existing models of the barrier effect is presented

Keywords

electric breakdown; gaseous insulation; permittivity; trees (electrical); barrier effect; breakdown time; breakdown voltage; conductivity; dielectrics; divergent and quasi-uniform electric fields; gaseous dielectrics; high permittivity; permittivity; quasi-uniform electric fields; solid dielectrics; tree-initiation time; Breakdown voltage; Conductivity; Dielectric breakdown; Dielectric liquids; Dielectric materials; Dielectrics and electrical insulation; Gases; Needles; Permittivity; Solids;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 2000. Proceedings of the 6th International Conference on

Conference_Location

Xi´an

Print_ISBN

0-7803-5459-1

Type

conf

DOI

10.1109/ICPADM.2000.876373

Filename

876373